{"id":170814,"date":"2026-07-31T13:10:35","date_gmt":"2026-07-31T13:10:35","guid":{"rendered":"https:\/\/pabau.com\/?p=170814"},"modified":"2026-08-17T12:25:15","modified_gmt":"2026-08-17T12:25:15","slug":"icd-10-code-m278","status":"publish","type":"post","link":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/","title":{"rendered":"ICD-10 code M27.8: Other specified diseases of jaws"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"MedicalWebPage\",\"headline\":\"ICD-10 code M27.8: Other specified diseases of jaws\",\"description\":\"ICD-10 code M27.8 (Other Specified Diseases of Jaws) is a billable FY2026 diagnosis code. It covers cherubism, fibrous dysplasia of the jaw, oral exostosis, unilateral condylar hyperplasia, and unilateral condylar hypoplasia.\",\"url\":\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-m278\/\",\"audience\":{\"@type\":\"MedicalAudience\",\"audienceType\":\"Clinician\"},\"reviewedBy\":{\"@type\":\"Person\",\"name\":\"Dr Vanja Kitanova\",\"jobTitle\":\"Medical Reviewer\",\"affiliation\":{\"@type\":\"Organization\",\"name\":\"Pabau\"},\"knowsAbout\":[\"Medical Coding\",\"Clinical Documentation\",\"Healthcare Billing\",\"Clinical Safety\"],\"sameAs\":\"https:\/\/pabau.com\/blog\/author\/vanja\/\"},\"datePublished\":\"2026-01-15\",\"dateModified\":\"2026-07-31\"}<\/script>\n\n\n        <div id=\"key_takeaways\">\n            <div class=\"header\">\n                                    <img decoding=\"async\" src=\"https:\/\/pabau.com\/wp-content\/uploads\/2025\/12\/Key-Takeaways-Icon.svg\" alt=\"Key takeaways\" height=\"42\" width=\"42\">\n                                <h3>Key takeaways<\/h3>\n            <\/div>\n            <div class=\"list\">\n                                                            <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>M27.8 is a billable ICD-10-CM code for FY2026, effective October 1, 2025, covering other specified diseases of jaws.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>The five named inclusions are cherubism, fibrous dysplasia of the jaw, oral exostosis, and unilateral condylar hyperplasia or hypoplasia.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>Torus mandibularis and Stafne bone cyst code to M27.0, and central giant cell granuloma codes to M27.1.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>Apply M27.8 only when no more specific M27 subcode fits, because unspecified coding is a common rejection trigger.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>Practice management software like Pabau ties the named diagnosis to the claim, so the documentation holds up at audit.<\/p>\n                        <\/div>\n                                                <\/div>\n        <\/div>\n    \n\n\n<p class=\"wp-block-paragraph\">ICD-10 code M27.8 is a billable ICD-10-CM code for other specified diseases of jaws. It is valid for FY2026, effective October 1, 2025.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use it when the ICD-10-CM index sends a named jaw condition to M27.8. The inclusions are cherubism, fibrous dysplasia of the jaw, and oral exostosis. Unilateral condylar hyperplasia and unilateral condylar hypoplasia complete the list.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Torus mandibularis, Stafne bone cyst, and giant cell granuloma all sound like they belong here. Each one codes somewhere else, and the differential below shows where.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n<div class=\"wp-block-embed__wrapper\">\n<iframe title=\"ICD-10 Revisions: Stay Updated or Fall Behind\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/bqAyb-BCA0w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">M27.8 at a glance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M27.8 is a billable, specific ICD-10-CM code valid for reimbursement in fiscal year 2026. The 2026 edition took effect on October 1, 2025, per <a href=\"https:\/\/www.cms.gov\/medicare\/coding-billing\/icd-10-codes\" target=\"_blank\" rel=\"nofollow noopener\">CMS ICD-10-CM updates<\/a>. Apply it when the clinical picture matches a named inclusion and no M27 sibling describes it more precisely.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Field<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Detail<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Code<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.8<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Full description<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other specified diseases of jaws<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Billable\/specific<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes, valid for HIPAA-covered claim submission<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Effective date<\/td>\n<td style=\"padding:12px 16px;color:#374151\">October 1, 2025 (FY2026)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">ICD-10-CM chapter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Chapter XIII: Diseases of the musculoskeletal system and connective tissue (M00-M99)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Block<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M26-M27: Dentofacial anomalies and other disorders of jaw<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Parent category<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27: Other diseases of jaws<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Code type<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Diagnosis (ICD-10-CM)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Excludes1<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Jaw pain, which codes to R68.84<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h2 class=\"wp-block-heading\">Code classification and hierarchy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M27.8 sits in the musculoskeletal chapter rather than the dental chapter, so jaw pathology is indexed under M00-M99. The <a href=\"https:\/\/icd.who.int\/browse10\/2019\/en\" target=\"_blank\" rel=\"nofollow noopener\">WHO ICD-10 framework<\/a> underpins the American clinical modification, which CDC\/NCHS and CMS maintain together.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Chapter XIII (M00-M99):<\/strong> Diseases of the musculoskeletal system and connective tissue<\/li><li><strong>Block M26-M27:<\/strong> Dentofacial anomalies and other disorders of jaw<\/li><li><strong>Category M27:<\/strong> Other diseases of jaws (parent code, non-billable)<\/li><li><strong>Code M27.8:<\/strong> Other specified diseases of jaws (billable, FY2026)<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The \u00abother specified\u00bb designation is deliberate. ICD-10-CM uses it for conditions that the index names but does not give a dedicated subcode within M27. Congenital anomalies of the mouth sit outside M27 altogether.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What does M27.8 cover?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The ICD-10-CM tabular list names five conditions under M27.8. Each is a distinct jaw pathology with no more specific home in the M27 family. The <a href=\"https:\/\/icd10cmtool.cdc.gov\/\" target=\"_blank\" rel=\"nofollow noopener\">CDC\/NCHS ICD-10-CM tool<\/a> confirms which conditions map here for the current fiscal year.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cherubism and fibrous dysplasia of the jaw<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cherubism<\/strong> is a rare autosomal dominant condition. It replaces jaw bone with fibrous tissue on both sides during childhood, producing the characteristic full-cheeked appearance. The tabular list names it as an inclusion under M27.8.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Fibrous dysplasia of the jaw<\/strong> replaces normal bone with fibrous tissue, which expands the mandible or maxilla. It is a named inclusion under M27.8. Fibrous dysplasia at several skeletal sites codes to Q78.1, so the record needs to say which one you mean.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Oral exostosis and condylar asymmetry<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Three further inclusions cover the shape of the jaw bone itself. Documentation has to name the exact lesion, because that is what ties the claim to the index entry.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Oral exostosis, or exostosis of jaw:<\/strong> A bony outgrowth of the maxilla or mandible. Its ICD-9-CM predecessor code was 526.81, which appears in the crosswalk below.<\/li><li><strong>Unilateral condylar hyperplasia:<\/strong> Asymmetric overgrowth of one mandibular condyle. It is a named inclusion under M27.8, and it drives many facial asymmetry referrals.<\/li><li><strong>Unilateral condylar hypoplasia:<\/strong> Underdevelopment of one mandibular condyle, which shortens that side of the mandible. It shares the M27.8 inclusion list with hyperplasia, so the note has to record which one you found.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Conditions that look similar but code elsewhere<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Five jaw conditions are routinely filed against M27.8 by habit. The index puts each of them somewhere else, so check this table before you submit.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Condition<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Correct code<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Code description<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Why not M27.8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Torus mandibularis<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.0<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Developmental disorders of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">The index treats the lingual bony ridge as a developmental disorder.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Stafne bone cyst (latent bone cyst)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.0<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Developmental disorders of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">It is a developmental cavity of the posterior mandible, not a true cyst.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Central giant cell granuloma<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.1<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Giant cell granuloma, central<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27 carries a dedicated subcode, so the residual code never applies.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Peripheral giant cell granuloma<\/td>\n<td style=\"padding:12px 16px;color:#374151\">K06.8<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other specified disorders of gingiva and edentulous alveolar ridge<\/td>\n<td style=\"padding:12px 16px;color:#374151\">The lesion is gingival, which moves it out of the M27 family.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Dentigerous and other jaw cysts<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.40-M27.49<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other and unspecified cysts of jaw<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Jaw cysts have their own subcodes, including M27.49 for other cysts.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">The pathology report decides the giant cell entry. Central lesions are M27.1 and peripheral lesions are K06.8, so read the variant before you pick a code.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chiropractors work with these codes constantly, and <a href=\"https:\/\/pabau.com\/industry\/chiropractic-software\/\">chiropractic software<\/a> keeps adjustments, plans, and progress in one record.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Documentation that supports the code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M27.8 is an \u00abother specified\u00bb code, so the record has to name the specific condition. Wording such as \u00abjaw lesion\u00bb or \u00abjaw abnormality\u00bb points at the unspecified code M27.9 instead, which invites payer scrutiny. Working from current patient records is what keeps that specificity available months later.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Payers expect the named diagnosis, imaging from a panoramic X-ray, CBCT, or MRI, and histopathology where the lesion type is in question. For a developmental lesion such as cherubism, family history and genetic findings strengthen the record. Good medical forms at intake set up defensible coding downstream.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Practices that capture the diagnosis on digital clinical forms at the point of care also cut transcription errors before billing sees the code.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A jaw lesion documented in 2020 can still be audited, so retention is part of the coding question.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/cdn.pabau.com\/cdn\/attachments\/pulse\/content-engine\/diagnostic_codes\/icd-10-code-m278\/comprehensive-patient-records.webp\" alt=\"Pabau client record showing patient details and a dated activity timeline\"\/><figcaption class=\"wp-element-caption\"><em>Pabau&#8217;s client record pairs patient details with a dated activity trail, so you can show exactly when each jaw diagnosis was documented.<\/em><\/figcaption><\/figure>\n\n\n\n<div style=\"height:35px;width:800px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Which specialties file this code?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Oral and maxillofacial surgery files M27.8 most often, with dentistry, ENT, and radiology close behind. Each of them meets jaw pathology in a different setting, and code reference pages rarely say who submits it.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Oral and maxillofacial surgeons:<\/strong> The primary users. Fibrous dysplasia, condylar hyperplasia, and jaw exostosis are all operative conditions here, and M27.8 appears on pre-authorization requests and post-operative claims.<\/li><li><strong>General dentists and prosthodontists:<\/strong> They meet bony overgrowths during prosthetic work-up, then refer for removal or monitor. Torus mandibularis found this way codes to M27.0.<\/li><li><strong>ENT (otolaryngology):<\/strong> Jaw lesions that affect the airway or present as facial asymmetry are often evaluated here first, before onward referral.<\/li><li><strong>Radiologists:<\/strong> Incidental jaw findings on CBCT, a panoramic X-ray, or MRI generate the diagnosis code that the practice then carries onto the claim.<\/li><li><strong>Plastic and reconstructive teams:<\/strong> Facial reconstruction after lesion excision runs through plastic surgery EMR workflows, where M27.8 sits as a secondary diagnosis.<\/li><li><strong>Regenerative medicine teams:<\/strong> Bone grafting after jaw lesion removal is charted in regenerative medicine EMR workflows against the same diagnosis code.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Related codes in the M27 category<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M27.8 applies only when no more specific sibling describes the diagnosis. Selecting the sibling first is the whole job, and the table below maps the family.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Code<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Description<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Billable?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.0<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Developmental disorders of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.1<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Giant cell granuloma, central<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.2<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Inflammatory conditions of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.3<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Alveolitis of jaws (dry socket)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.4x<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other and unspecified cysts of jaw (M27.40-M27.49)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes (subcodes)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.5x<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Periradicular pathology (M27.51-M27.59)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes (subcodes)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.6x<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Endosseous dental implant failure (M27.61-M27.69)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes (subcodes)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.8<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other specified diseases of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">M27.9<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Disease of jaws, unspecified<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes (avoid when the diagnosis is known)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h3 class=\"wp-block-heading\">Choosing between M27.8 and its siblings<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Check each sibling before defaulting to M27.8. The five comparisons below cover almost every jaw claim.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>M27.8 vs. M27.0:<\/strong> M27.0 covers developmental disorders of jaws. Torus mandibularis, torus palatinus, and Stafne&#8217;s cyst all belong there.<\/li><li><strong>M27.8 vs. M27.1:<\/strong> M27.1 is central giant cell granuloma. When pathology confirms that lesion, M27.1 is the code regardless of any synonym overlap.<\/li><li><strong>M27.8 vs. M27.2:<\/strong> M27.2 covers inflammatory jaw conditions such as osteitis and periostitis. Fibrous dysplasia is not inflammatory, so it stays at M27.8.<\/li><li><strong>M27.8 vs. M27.4x:<\/strong> Jaw cysts have their own subcodes, from M27.40 to M27.49. A dentigerous cyst never codes to M27.8.<\/li><li><strong>M27.8 vs. M27.9:<\/strong> M27.9 is for a jaw disease that genuinely cannot be identified. Coding M27.9 when the chart names an M27.8 inclusion is an error.<\/li><\/ul>\n\n\n        <div id=\"pro_tip\">\n            <div class=\"img\">\n                <svg width=\"42\" height=\"42\" viewBox=\"0 0 42 42\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                    <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                        d=\"M12.6383 19.5238C12.6632 21.2071 12.8734 22.9926 12.0685 24.5523C11.0341 26.8917 8.45076 28.169 7.56292 30.5918C6.63082 33.1061 7.19505 36.185 9.31371 37.9786C10.929 39.5678 13.4183 39.9873 15.6061 39.5463C17.4592 39.073 19.1049 37.8388 19.9706 36.1608C20.781 34.7141 20.7866 32.9904 20.5293 31.3985C20.1006 29.3092 18.3775 27.8705 16.9807 26.362C14.8814 24.1005 14.6684 20.6854 15.595 17.8915C16.4331 15.4768 19.0026 14.2344 20.0425 11.9461C20.7202 10.6769 20.7506 9.20327 20.6068 7.81304C20.1864 5.40098 18.3139 3.23631 15.8716 2.56674C13.9742 2.03969 11.8224 2.30052 10.1739 3.37614C8.70522 4.34688 7.5878 5.86618 7.28356 7.58178C6.76081 9.82981 7.53525 12.2822 9.20307 13.9118C10.7658 15.4741 12.4806 17.2273 12.6383 19.5238Z\"\n                        fill=\"#2BADD4\" \/>\n                    <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                        d=\"M22.7048 19.8387C22.6822 22.3279 24.4507 24.6234 26.7493 25.4682C28.0531 25.961 29.4725 25.9183 30.7989 25.5487C32.0575 24.9955 33.301 24.2237 34.0069 23.0092C34.8384 21.5811 35.2982 19.8286 34.7832 18.2094C34.3611 16.2507 32.8739 14.6541 31.0275 13.9426C28.6736 12.9595 25.8073 13.7942 24.1719 15.7001C23.2022 16.8366 22.6143 18.3326 22.7048 19.8387Z\"\n                        fill=\"#2BADD4\" \/>\n                <\/svg>\n            <\/div>\n            <div class=\"text\">\n                <h3>Pro Tip<\/h3>\n                <p>Before assigning M27.8, run the Alphabetic Index query for the exact named condition in the patient&#8217;s chart. If the index returns M27.8, the inclusion is confirmed. If it returns a more specific subcode within M27, use that code instead. Working from memory rather than the index is where jaw coding errors creep in.<\/p>\n            <\/div>\n        <\/div>\n    \n\n\n<h2 class=\"wp-block-heading\">ICD-9-CM to ICD-10-CM crosswalk<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Retroactive audits and pre-2015 records still reference ICD-9 codes. The mapping below follows the General Equivalence Mapping (GEM) files, and those mappings are approximate and sometimes one-to-many. Verify against current GEM files via the <a href=\"https:\/\/www.aapc.com\/codes\/icd-10-codes-range\/\" target=\"_blank\" rel=\"nofollow noopener\">AAPC ICD-10-CM lookup<\/a> before quoting one in a formal response.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">ICD-9-CM code<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">ICD-9 description<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">ICD-10-CM<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">526.81<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Exostosis of jaw<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.8<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Approximate, so verify via GEM.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">526.89<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other specified diseases of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.8<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Direct approximate equivalent, and the legacy code for fibrous dysplasia of jaw.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">526.2<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other cysts of jaws<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.49<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Jaw cysts map to the M27.4x subcodes, not to M27.8.<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">526.9<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Unspecified disease of jaw<\/td>\n<td style=\"padding:12px 16px;color:#374151\">M27.9<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Maps to M27.9, not M27.8.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">The distinction matters in practice. An audit requesting pre-2015 records will reference ICD-9 codes, and the crosswalk lets a coder explain clinical continuity without conflating the two systems. A routine medical chart audit is usually where those legacy references surface.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/cdn.pabau.com\/cdn\/attachments\/pulse\/content-engine\/diagnostic_codes\/icd-10-code-m278\/automate-claims-through-healthcode.webp\" alt=\"Pabau checkout screen alongside a completed insurance invoice\"\/><figcaption class=\"wp-element-caption\"><em>Pabau links each invoice to the insurer and the treatment given, so a coded jaw claim leaves the practice with matching records.<\/em><\/figcaption><\/figure>\n\n\n\n<div style=\"height:35px;width:800px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Coding tips and common errors<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Most M27.8 claim problems come from vague documentation that cannot support the code at audit. The rest come from reaching for M27.8 when a specific sibling exists, or from pairing it with a procedure code that does not match.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Name the condition in the chart.<\/strong> \u00abOther specified disease of jaw\u00bb is not a diagnosis. The chart must name the condition, such as cherubism or fibrous dysplasia of the mandible.<\/li><li><strong>Avoid M27.9 when a named condition is documented.<\/strong> Unspecified codes attract payer scrutiny. Where the index confirms an inclusion, M27.8 is the stronger submission.<\/li><li><strong>Check for a more specific subcode first.<\/strong> Central giant cell granuloma, jaw cysts, and implant failures all have their own subcodes. M27.8 is the residual code for named conditions the index sends there.<\/li><li><strong>Laterality is not part of M27.8.<\/strong> The code carries no laterality extension. Record the side in the narrative and stop hunting for a digit that does not exist.<\/li><li><strong>Pair M27.8 with a procedure code that matches.<\/strong> Excision of a benign jaw tumor or cyst bills from the 21040 to 21048 range. Facial skeleton reconstruction sits in a different family, such as CPT code 21154. A mismatch is a common edit trigger.<\/li><li><strong>Verify each fiscal year.<\/strong> The code set updates every October 1. Inclusions are added and moved, so confirm M27.8 still holds at the start of each fiscal year.<\/li><\/ul>\n\n\n        <div id=\"pro_tip\">\n            <div class=\"img\">\n                <svg width=\"42\" height=\"42\" viewBox=\"0 0 42 42\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                    <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                        d=\"M12.6383 19.5238C12.6632 21.2071 12.8734 22.9926 12.0685 24.5523C11.0341 26.8917 8.45076 28.169 7.56292 30.5918C6.63082 33.1061 7.19505 36.185 9.31371 37.9786C10.929 39.5678 13.4183 39.9873 15.6061 39.5463C17.4592 39.073 19.1049 37.8388 19.9706 36.1608C20.781 34.7141 20.7866 32.9904 20.5293 31.3985C20.1006 29.3092 18.3775 27.8705 16.9807 26.362C14.8814 24.1005 14.6684 20.6854 15.595 17.8915C16.4331 15.4768 19.0026 14.2344 20.0425 11.9461C20.7202 10.6769 20.7506 9.20327 20.6068 7.81304C20.1864 5.40098 18.3139 3.23631 15.8716 2.56674C13.9742 2.03969 11.8224 2.30052 10.1739 3.37614C8.70522 4.34688 7.5878 5.86618 7.28356 7.58178C6.76081 9.82981 7.53525 12.2822 9.20307 13.9118C10.7658 15.4741 12.4806 17.2273 12.6383 19.5238Z\"\n                        fill=\"#2BADD4\" \/>\n                    <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                        d=\"M22.7048 19.8387C22.6822 22.3279 24.4507 24.6234 26.7493 25.4682C28.0531 25.961 29.4725 25.9183 30.7989 25.5487C32.0575 24.9955 33.301 24.2237 34.0069 23.0092C34.8384 21.5811 35.2982 19.8286 34.7832 18.2094C34.3611 16.2507 32.8739 14.6541 31.0275 13.9426C28.6736 12.9595 25.8073 13.7942 24.1719 15.7001C23.2022 16.8366 22.6143 18.3326 22.7048 19.8387Z\"\n                        fill=\"#2BADD4\" \/>\n                <\/svg>\n            <\/div>\n            <div class=\"text\">\n                <h3>Pro Tip<\/h3>\n                <p>Run a quarterly audit on every claim you submitted with M27.8 and look for patterns in the rejections. If one jaw condition keeps generating denials, check whether the index inclusion moved in the current-year update or whether the procedure pairing needs revision. Good practice management software surfaces that pattern before it becomes a write-off trend.<\/p>\n            <\/div>\n        <\/div>\n    \n\n\n<h2 class=\"wp-block-heading\">Related ICD-10 codes<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-m1990\/\">ICD-10 code M19.90 \u2014 Degenerative Joint Disease Documentation<\/a><\/li>\n\n\n<li><a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-m279\/\">ICD-10 code M27.9 \u2014 Disease of jaws, unspecified<\/a><\/li>\n\n\n<li><a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-m300\/\">ICD-10 Code M30.0 \u2014 Polyarteritis nodosa<\/a><\/li>\n\n\n<li><a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-m301\/\">ICD-10 code M30.1 \u2014 Polyarteritis with lung involvement<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How Pabau keeps jaw diagnoses claim-ready<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In many practices the diagnosis lives in the operative note, the imaging sits in a separate viewer, and the claim gets built later from memory. When a payer asks why M27.8 was submitted, somebody has to reassemble the story from three systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Practice management software like Pabau keeps those pieces on one patient record. The named jaw condition, the CBCT report, the consent, and the invoice all hang off the same timeline. Your coder reads the chart instead of chasing it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pabau&#8217;s claims management software then tracks what each payer did with the claim. Rejections show up as a pattern you can act on, rather than a write-off you find at month end.<\/p>\n\n\n        <div id=\"book_a_demo\">\n            <div class=\"left-side\">\n                <div class=\"logo\">\n                    <img decoding=\"async\"\n                        src=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/01\/Logo.svg\"\n                        alt=\"Logo\"\n                        loading=\"lazy\"\n                    \/>\n                <\/div>\n\n                <h3 class=\"heading\">\n                    Stop losing jaw claims to thin documentation                <\/h3>\n\n                <p class=\"description\">\n                    Pabau helps oral surgery and maxillofacial practices submit M27.8 with a complete documentation trail. Fewer payer rejections mean fewer write-offs at month end.                <\/p>\n\n                <div class=\"button-group\">\n                    <a href=\"\/book-demo\/\" class=\"btn btn-scale-effect btn-cta-color btn-md\">\n                        <span class=\"btn-text\">Book a demo<\/span>\n                        <div class=\"btn-icon btn-icon-right\" aria-hidden=\"true\">\n                            <svg\n                                width=\"14\"\n                                height=\"12\"\n                                viewBox=\"0 0 14 12\"\n                                fill=\"none\"\n                                xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n                            >\n                                <path\n                                    d=\"M0.75 4.77295C0.335786 4.77295 0 5.10874 0 5.52295C0 5.93716 0.335786 6.27295 0.75 6.27295V5.52295V4.77295ZM13.2803 6.05328C13.5732 5.76039 13.5732 5.28551 13.2803 4.99262L8.50736 0.219648C8.21447 -0.073245 7.73959 -0.073245 7.4467 0.219648C7.15381 0.512542 7.15381 0.987415 7.4467 1.28031L11.6893 5.52295L7.4467 9.76559C7.15381 10.0585 7.15381 10.5334 7.4467 10.8263C7.73959 11.1191 8.21447 11.1191 8.50736 10.8263L13.2803 6.05328ZM0.75 5.52295V6.27295L12.75 6.27295V5.52295V4.77295L0.75 4.77295V5.52295Z\"\n                                    fill=\"currentColor\"\n                                ><\/path>\n                            <\/svg>\n                        <\/div>\n                    <\/a>\n                <\/div>\n            <\/div>\n\n            <div class=\"right-side\">\n                <img decoding=\"async\"\n                    src=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/01\/Home-Page-Concept-4.webp\"\n                    alt=\"Pabau practice management dashboard\"\n                    loading=\"lazy\"\n                \/>\n            <\/div>\n        <\/div>\n        \n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M27.8 is a narrow code with a wide reputation. It carries five named inclusions, and several of the conditions most often filed against it belong to M27.0, M27.1, or M27.4x.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most of the work happens in the chart. Name the lesion, attach the imaging, and run the index query before you submit. Do that and the code stops being a judgment call.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pabau.com\/book-demo\/\">Book a demo<\/a> to see how Pabau handles diagnosis documentation and claim tracking for oral surgery practices.<\/p>\n\n\n        <div id=\"expert_picks\">\n            <div class=\"header\">\n                                    <img decoding=\"async\" src=\"https:\/\/pabau.com\/wp-content\/uploads\/2025\/11\/Expert-Picks.svg\" alt=\"Continue your research\" height=\"42\" width=\"42\">\n                                <h3>Continue your research<\/h3>\n            <\/div>\n            <div class=\"content\">\n                                                            <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Coding an excision of a jaw lesion?<\/strong> <a href=\"https:\/\/pabau.com\/procedure-codes\/cpt-code-21048\/\">CPT code 21048<\/a> covers the billing detail for a benign tumor or cyst of the maxilla.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Repairing facial nerve damage after jaw surgery?<\/strong> <a href=\"https:\/\/pabau.com\/procedure-codes\/cpt-code-15845\/\">CPT code 15845<\/a> sets out how the graft is documented and billed.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Sending records with a jaw surgery referral?<\/strong> <a href=\"https:\/\/pabau.com\/templates\/dental-records-release-form\/\">Dental records release form<\/a> gives you a compliant release to attach.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Onboarding a new oral surgery patient?<\/strong> <a href=\"https:\/\/pabau.com\/templates\/dental-new-patient-form\/\">Dental new patient form<\/a> captures the history and consent your first appointment needs.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Clearing a patient before an operative date?<\/strong> <a href=\"https:\/\/pabau.com\/templates\/dental-clearance-form\/\">Dental clearance form<\/a> documents the physician sign-off you need on file.<\/p>\n                        <\/div>\n                                                <\/div>\n        <\/div>\n    \n\n\n<h2 class=\"wp-block-heading\">Frequently asked questions<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1785497521333\"><h3 class=\"schema-faq-question\">What is ICD-10 code M27.8?<\/h3> <p class=\"schema-faq-answer\">ICD-10 code M27.8 is a billable ICD-10-CM diagnosis code for other specified diseases of jaws. Use it when the ICD-10-CM index sends the named jaw condition to M27.8. The inclusions are cherubism, fibrous dysplasia of the jaw, and oral exostosis. Unilateral condylar hyperplasia and unilateral condylar hypoplasia are named too. The code is valid for FY2026, effective October 1, 2025.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1785497521334\"><h3 class=\"schema-faq-question\">Is M27.8 a billable ICD-10 code?<\/h3> <p class=\"schema-faq-answer\">Yes, M27.8 is a billable and specific ICD-10-CM code valid for HIPAA-covered claim submissions in fiscal year 2026. It works as a standalone diagnosis code for reimbursement, provided the clinical documentation names the specific jaw condition being coded.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1785497521335\"><h3 class=\"schema-faq-question\">What conditions are included under M27.8?<\/h3> <p class=\"schema-faq-answer\">Five conditions are named under M27.8: cherubism, fibrous dysplasia of the jaw, oral exostosis, and unilateral condylar hyperplasia or hypoplasia. Torus mandibularis and Stafne bone cyst belong to M27.0, and central giant cell granuloma belongs to M27.1. Verify the current-year Alphabetic Index, because inclusions move with the annual update.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1785497521336\"><h3 class=\"schema-faq-question\">What is the ICD-9 equivalent of M27.8?<\/h3> <p class=\"schema-faq-answer\">The closest ICD-9-CM equivalents are 526.89 and 526.81. Both map approximately to M27.8, and 526.89 is also the legacy code for fibrous dysplasia of jaw. These crosswalks come from CMS General Equivalence Mapping files and are approximate. Verify against GEM documentation before using them in an audit response.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1785497521337\"><h3 class=\"schema-faq-question\">Is fibrous dysplasia of the jaw coded under M27.8?<\/h3> <p class=\"schema-faq-answer\">Yes, fibrous dysplasia of the jaw is listed as an inclusion under M27.8 in the ICD-10-CM Alphabetic Index. Distinguish it from systemic fibrous dysplasia affecting other skeletal sites, which may code to a different chapter.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1785497521339\"><h3 class=\"schema-faq-question\">Is giant cell granuloma coded to M27.8?<\/h3> <p class=\"schema-faq-answer\">No. Central giant cell granuloma of the jaw codes to M27.1, which is its own dedicated subcode. Peripheral giant cell granuloma is a gingival lesion and codes to K06.8. Check the pathology report for the variant before you select either code.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1785497521338\"><h3 class=\"schema-faq-question\">What is the difference between M27.8 and M27.0?<\/h3> <p class=\"schema-faq-answer\">M27.0 covers developmental disorders of jaws, which is where torus mandibularis, torus palatinus, and Stafne bone cyst sit. M27.8 covers the other named jaw diseases that have no dedicated subcode. Run the index query on the exact condition, then use whichever code it returns.<\/p> <\/div> <\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>M27.8 covers cherubism, fibrous dysplasia, oral exostosis and condylar hyperplasia or hypoplasia. Torus mandibularis codes to M27.0.<\/p>\n","protected":false},"author":81,"featured_media":170812,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_linkdex":"","_yoast_wpseo_content_score":"90","_yoast_wpseo_is_cornerstone":"","_yoast_wpseo_keywordsynonyms":"[\"\",\"\",\"\",\"\"]","_yoast_wpseo_focuskw_text_input":"","_seo_original_html":"","footnotes":""},"categories":[1549,1550],"tags":[1543,2508,3367,3368],"class_list":["post-170814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diagnostic-codes","category-icd-10-cm","tag-clinical-documentation","tag-medical-coding","tag-oral-surgery","tag-oral-surgery-billing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ICD-10 code M27.8: what it covers and what codes elsewhere<\/title>\n<meta name=\"description\" content=\"M27.8 covers cherubism, fibrous dysplasia, oral exostosis and condylar hyperplasia or hypoplasia. Torus mandibularis codes to M27.0.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ICD-10 code M27.8: what it covers and what codes elsewhere\" \/>\n<meta property=\"og:description\" content=\"M27.8 covers cherubism, fibrous dysplasia, oral exostosis and condylar hyperplasia or hypoplasia. Torus mandibularis codes to M27.0.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/\" \/>\n<meta property=\"og:site_name\" content=\"Pabau\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Pabau\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-31T13:10:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-17T12:25:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/07\/icd-10-code-m278.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Aleksandar Kochovski\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@pabaucrm\" \/>\n<meta name=\"twitter:site\" content=\"@pabaucrm\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Aleksandar Kochovski\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/\"},\"author\":{\"name\":\"Aleksandar Kochovski\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/#\\\/schema\\\/person\\\/73b672a49e20bfba8161e3c17ee3dda2\"},\"headline\":\"ICD-10 code M27.8: Other specified diseases of jaws\",\"datePublished\":\"2026-07-31T13:10:35+00:00\",\"dateModified\":\"2026-08-17T12:25:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/\"},\"wordCount\":2344,\"publisher\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/icd-10-code-m278.webp\",\"keywords\":[\"Clinical Documentation\",\"Medical Coding\",\"Oral surgery\",\"Oral Surgery Billing\"],\"articleSection\":[\"Diagnostic Codes\",\"ICD-10-CM\"],\"inLanguage\":\"es\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/\",\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/\",\"name\":\"ICD-10 code M27.8: what it covers and what codes elsewhere\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/icd-10-code-m278.webp\",\"datePublished\":\"2026-07-31T13:10:35+00:00\",\"dateModified\":\"2026-08-17T12:25:15+00:00\",\"description\":\"M27.8 covers cherubism, fibrous dysplasia, oral exostosis and condylar hyperplasia or hypoplasia. 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It combines scheduling, electronic health records, clinical forms, payments, marketing automation, reporting, and patient engagement tools into one secure cloud system to help practices streamline operations and grow their business.\",\"foundingDate\":\"2011-10-20\",\"numberOfEmployees\":{\"@type\":\"QuantitativeValue\",\"minValue\":\"201\",\"maxValue\":\"500\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/#\\\/schema\\\/person\\\/73b672a49e20bfba8161e3c17ee3dda2\",\"name\":\"Aleksandar Kochovski\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-aleksandar-kochovski-profile-picture-96x96.jpeg\",\"url\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-aleksandar-kochovski-profile-picture-96x96.jpeg\",\"contentUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-aleksandar-kochovski-profile-picture-96x96.jpeg\",\"caption\":\"Aleksandar Kochovski\"},\"description\":\"Aleksandar is a content strategist and editor working in tech publishing, with a background in higher education. He specializes in topics around compliance in software solutions. When he's not writing at Pabau, you can find him tending to his bonsai collection or hitting the gym.\",\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/blog\\\/author\\\/aleksandar-kochovski\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521333\",\"position\":1,\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521333\",\"name\":\"What is ICD-10 code M27.8?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ICD-10 code M27.8 is a billable ICD-10-CM diagnosis code for other specified diseases of jaws. Use it when the ICD-10-CM index sends the named jaw condition to M27.8. The inclusions are cherubism, fibrous dysplasia of the jaw, and oral exostosis. Unilateral condylar hyperplasia and unilateral condylar hypoplasia are named too. The code is valid for FY2026, effective October 1, 2025.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521334\",\"position\":2,\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521334\",\"name\":\"Is M27.8 a billable ICD-10 code?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, M27.8 is a billable and specific ICD-10-CM code valid for HIPAA-covered claim submissions in fiscal year 2026. It works as a standalone diagnosis code for reimbursement, provided the clinical documentation names the specific jaw condition being coded.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521335\",\"position\":3,\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521335\",\"name\":\"What conditions are included under M27.8?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Five conditions are named under M27.8: cherubism, fibrous dysplasia of the jaw, oral exostosis, and unilateral condylar hyperplasia or hypoplasia. Torus mandibularis and Stafne bone cyst belong to M27.0, and central giant cell granuloma belongs to M27.1. Verify the current-year Alphabetic Index, because inclusions move with the annual update.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521336\",\"position\":4,\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521336\",\"name\":\"What is the ICD-9 equivalent of M27.8?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The closest ICD-9-CM equivalents are 526.89 and 526.81. Both map approximately to M27.8, and 526.89 is also the legacy code for fibrous dysplasia of jaw. These crosswalks come from CMS General Equivalence Mapping files and are approximate. Verify against GEM documentation before using them in an audit response.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521337\",\"position\":5,\"url\":\"https:\\\/\\\/pabau.com\\\/es\\\/diagnostic-codes\\\/icd-10-code-m278\\\/#faq-question-1785497521337\",\"name\":\"Is fibrous dysplasia of the jaw coded under M27.8?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, fibrous dysplasia of the jaw is listed as an inclusion under M27.8 in the ICD-10-CM Alphabetic Index. 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He specializes in topics around compliance in software solutions. When he's not writing at Pabau, you can find him tending to his bonsai collection or hitting the gym.","url":"https:\/\/pabau.com\/es\/blog\/author\/aleksandar-kochovski\/"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521333","position":1,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521333","name":"What is ICD-10 code M27.8?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"ICD-10 code M27.8 is a billable ICD-10-CM diagnosis code for other specified diseases of jaws. Use it when the ICD-10-CM index sends the named jaw condition to M27.8. The inclusions are cherubism, fibrous dysplasia of the jaw, and oral exostosis. Unilateral condylar hyperplasia and unilateral condylar hypoplasia are named too. The code is valid for FY2026, effective October 1, 2025.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521334","position":2,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521334","name":"Is M27.8 a billable ICD-10 code?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, M27.8 is a billable and specific ICD-10-CM code valid for HIPAA-covered claim submissions in fiscal year 2026. It works as a standalone diagnosis code for reimbursement, provided the clinical documentation names the specific jaw condition being coded.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521335","position":3,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521335","name":"What conditions are included under M27.8?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Five conditions are named under M27.8: cherubism, fibrous dysplasia of the jaw, oral exostosis, and unilateral condylar hyperplasia or hypoplasia. Torus mandibularis and Stafne bone cyst belong to M27.0, and central giant cell granuloma belongs to M27.1. Verify the current-year Alphabetic Index, because inclusions move with the annual update.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521336","position":4,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521336","name":"What is the ICD-9 equivalent of M27.8?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The closest ICD-9-CM equivalents are 526.89 and 526.81. Both map approximately to M27.8, and 526.89 is also the legacy code for fibrous dysplasia of jaw. These crosswalks come from CMS General Equivalence Mapping files and are approximate. Verify against GEM documentation before using them in an audit response.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521337","position":5,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521337","name":"Is fibrous dysplasia of the jaw coded under M27.8?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, fibrous dysplasia of the jaw is listed as an inclusion under M27.8 in the ICD-10-CM Alphabetic Index. Distinguish it from systemic fibrous dysplasia affecting other skeletal sites, which may code to a different chapter.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521339","position":6,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521339","name":"Is giant cell granuloma coded to M27.8?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Central giant cell granuloma of the jaw codes to M27.1, which is its own dedicated subcode. Peripheral giant cell granuloma is a gingival lesion and codes to K06.8. Check the pathology report for the variant before you select either code.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521338","position":7,"url":"https:\/\/pabau.com\/es\/diagnostic-codes\/icd-10-code-m278\/#faq-question-1785497521338","name":"What is the difference between M27.8 and M27.0?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"M27.0 covers developmental disorders of jaws, which is where torus mandibularis, torus palatinus, and Stafne bone cyst sit. M27.8 covers the other named jaw diseases that have no dedicated subcode. Run the index query on the exact condition, then use whichever code it returns.","inLanguage":"es"},"inLanguage":"es"}]}},"yoast":{"focus_keyword":"ICD-10 Code M27.8","seo_title":"ICD-10 code M27.8: what it covers and what codes elsewhere","meta_description":"M27.8 covers cherubism, fibrous dysplasia, oral exostosis and condylar hyperplasia or hypoplasia. 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